Speaker
Description
IMB-CNM has been a main actor in the development of Low Gain Avalanche Detectors since the initial device conception, more than a decade ago. One of the challenges for LGAD is the deterioration of the gain and timing resolution after radiation damage due to the acceptor removal mechanism. A well-established solution to increase radiation tolerance is carbon co-doping in the gain layer.
The IMB-CNM’s Radiation Detectors Group has revisited its strategy regarding the technological design with a redefinition of the doping profiles, looking for higher uniformity on the gain layers and better production yield.
This contribution aims at compiling the characterization of the latest IMB-CNM production, with a particular focus on the sensing performance (e.g. charge collection) and timing properties. The study includes neutron irradiations at the TRIGA reactor facility in JSI up to fluences of 8e14 neq/cm2, 1.5e15 neq/cm2 and 2.5e15 neq/cm2. Comparison of the irradiated and non-irradiated samples will be included in the contribution.